At the saved game selection screen, highlight a file. Note: Keep the file highlighted during the duration of the code. Hold Nunchuk C and press 1 three times, then release the button. Hold Z and press 1 four times, then release the button. Hold C + Z and press 1 five times. If you entered the code correctly, all four gems will appear. Select that saved game file, then enter the sport selection screen and everything will be gold.

Bonus stages

Successfully complete the indicated task in order to unlock the corresponding stage. Note: Standard Exhibition, Tournament, and Online matches all count for stages that require a certain number of matches to be unlocked.

Bowser's Castle: Defeat Bowser in the Star Cup.

Daisy Garden: Successfully complete the Flower Cup. This stage is not available in Volleyball.

Successfully complete one of the following tasks to unlock the corresponding alternate character. Note: For tasks that require a certain number of games to be played, you do not have to win the actual games. For tasks that require hidden routes, you must find them in the tournament map and defeat the character in a mission to unlock them. For tasks through the Star Road, you must complete the Star Road, which is inside the Star Cup hidden routes, then defeat the Final Fantasy team and Behemoth.